I can not accept that the gold out of the canadian mint is simply missing.
While incompetant handling could be to blame, if forced to bet I would say that it was stolen or diverted and theft is a cover up for that diversion.

By diversion I mean that the right hand does not know what the left hand is doing. That left hand must be some high ranking officialdom had the gold used in the gold price capping scheme and is covering up that action.
Insider theft is my next guess in ranking and last sheer incompetance.

Another note is the economy. Canadian housing starts are up and unemployment is better than expected ( 8.6% country wide) per CBC from the weekend. CBC implied that the economy has stopped getting worse in June. Lets hope we will have a real turn around.